Multiple Choice
In a typical extraction experiment to isolate benzoic acid from a mixture, which of the following represents the structure of benzoic acid?
4. BONUS: Lab Techniques and Procedures
Extraction
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Which of the following best describes the process of extraction in chemistry?
A
A process in which a solid is converted directly into a gas without passing through the liquid phase.
B
A technique used to separate a substance from a mixture by transferring it into a different phase, often using a solvent.
C
A method for determining the concentration of a solute in a solution by adding a reagent of known concentration.
D
A procedure for measuring the mass of a substance using a balance.
Verified step by step guidance1
Understand that extraction in chemistry is a separation technique used to isolate a substance from a mixture.
Recognize that extraction involves transferring the desired substance from one phase (solid, liquid, or gas) into another phase, typically using a solvent that selectively dissolves the substance.
Note that extraction is different from sublimation, which is the direct conversion of a solid to a gas without passing through the liquid phase.
Distinguish extraction from titration, which is a method to determine concentration by reacting with a reagent of known concentration.
Also differentiate extraction from simple mass measurement, which involves using a balance to find the mass of a substance.
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